The drugs manufactured by Indian cos are licensed, not stolen. The US itself imports several billions worth of pharmas from India every year, and the USFDA inspects pharma plants in India for this reason.
The reason that drugs manufactured in India and sold in India and developing countries are so cheap is that India has compulsory licensing and very weak protection for analogues. The US puts up with it because it's a big market and it can't stand US-level prices anyway. But it's not Indian IP, and I don't think it's much of a stretch to call it "stolen," at least insofar as intellectual property can be stolen at all.
https://www.forbes.com/sites/johnlamattina/2013/04/08/indias...